That's cool, Miggesch.  Glad it worked.  The reason I suggested reinstalling WMP10 first is so that people can be sure that they have the latest version of the codec.  Obviously, if you already have it, then just the reghack will do the trick.

Have fun! :smileyhappy:

OK, I have fixed my no music issue, and I think this may be a definitive way for most if not all others can use to fix this problem.

First, download Windows Media Player 10 from http://www.microsoft.com/windows/windowsmedia/player/download/download.aspx, and reinstall WMP10 (or install it for the first time if you still have a previous version).  Then download this registry file from http://www.looprecorder.de/l3codecp.reg.  Once you have the file downloaded, run it and click Yes to add it to the registry.

What this registry file does is registers the l3codecp.acm with Windows by adding the following keys/values:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32]
"msacm.l3acm"="l3codecp.acm"
"msacm.l3codec"="l3codecp.acm"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc]
"l3codecp.acm"="Fraunhofer IIS MPEG Layer-3 Codec (professional)"

The l3codecp.acm is the codec used for mp3 playback, and for whatever reason, WMP10 doesn't properly register it with Windows when it is installed, hence no music in MxO.  Why MxO is sensitive to this and other games are not, I do not know.  But this worked for me, and I hope it works for everyone else.  Good luck!

Message Edited by Stormviper on 03-08-200608:39 PM